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3M Speedglas

3M Speedglas Adflo Air Respirator with Heavy-duty Battery 837731

£738.00 Inc. VAT
£615.00 Ex. VAT

4 in stock

UK Online Price ComparisonVerified 20 June 2026 · updated daily
★ thefacemaskstore.co.uk£738.00Best price
WIRS£874.80+£136.80
Engweld (out of stock) (last verified)£930.00+£192.00
United Welding (out of stock)£1,012.54+£274.54

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3M Speedglas Adflo Powered Air Respirator with Heavy-Duty Battery (837731)

The 3M Speedglas Adflo is a belt-mounted powered air-purifying respirator (PAPR) for welding. It connects directly to any 3M Speedglas series welding helmet and, with the particle filter fitted, provides a nominal protection factor of up to 500 (TH3) depending on the helmet used. This 837731 kit is supplied with the longer-running heavy-duty battery.

Two airflow settings (170 and 200 litres per minute) let the welder balance airflow against battery life. A particle filter is included; optional gas filters (837242 or 837542) and an odour filter (837110) can be added for work where gases or vapours are present.

What’s included

  • 3M Adflo 837730 powered air turbo unit
  • Heavy-duty battery
  • Battery charger
  • Self-adjusting breathing tube with QRS (Quick Release Swivel)
  • Airflow indicator
  • Particle filter, prefilter and spark arrestor
  • Belt
  • 12-month warranty (full terms on request)
  • Gas filters are sold separately

Key features

  • Particle protection up to TH3 (nominal protection factor up to 500) when used with a 3M Speedglas welding helmet — the exact NPF depends on the headtop fitted
  • Connects directly to any 3M Speedglas series respiratory welding helmet
  • Two airflow rates: 170 and 200 litres per minute
  • Heavy-duty battery: approximately 10–13 hours run time; charge time approximately 5.5 hours
  • Expandable with optional gas filters (837242 or 837542) and an odour filter (837110)

Specifications

  • Part number (MPN): 837731
  • 3M ID: 7100166698 · EAN: 04046719806638
  • Type: Belt-mounted powered air-purifying respirator (PAPR)
  • Protection: NPF 50–500 (up to TH3 with a Speedglas helmet); particle filter
  • Battery: Heavy-duty — approx. 10–13 hours; charge approx. 5.5 hours
  • Airflow: 170 / 200 litres per minute
  • Compatibility: 3M Speedglas series welding helmets

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